INCOME TAXES	3 Months Ended
Mar. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The effective income tax rates for the three months ended March 31, 2018 and 2017 were (16.7)% and 17.3%, respectively. The period-over-period decrease in the effective income tax rate is primarily due to the effects of rate-regulated accounting for income taxes and other permanent items relative to the decrease in earnings for the three months ended March 31, 2018 as well as the impact of the United States federal corporate income tax rate reduction enacted in 2017. On December 22, 2017, the United States enacted the TCJA and we made reasonable estimates for the measurement and accounting of certain effects of the TCJA in our consolidated financial statements for the year ended December 31, 2017. We recorded a nil provision in the first quarter of 2018, based on existing guidance and legislation, for the remaining effects of the TCJA including the Global Intangible Low Taxed Income tax and the Base Erosion and Anti-abuse tax.

INCOME TAXES

3 Months Ended

Mar. 31, 2018

The effective income tax rates for the three months ended March 31, 2018 and 2017 were (16.7)% and 17.3%, respectively. The period-over-period decrease in the effective income tax rate is primarily due to the effects of rate-regulated accounting for income taxes and other permanent items relative to the decrease in earnings for the three months ended March 31, 2018 as well as the impact of the United States federal corporate income tax rate reduction enacted in 2017.

On December 22, 2017, the United States enacted the TCJA and we made reasonable estimates for the measurement and accounting of certain effects of the TCJA in our consolidated financial statements for the year ended December 31, 2017. We recorded a nil provision in the first quarter of 2018, based on existing guidance and legislation, for the remaining effects of the TCJA including the Global Intangible Low Taxed Income tax and the Base Erosion and Anti-abuse tax.